A petrol stove isn't really necessary for camping/moutaineering/bike touring/backpacking in the uk. The pocket rocket is cheaper to buy, lighter, more simple to use and the gas is widely available. However, petrol probably works out cheaper than gas, especially abroad.
I really strongly advise that everyone who drives anywhere, gets a stove and a mug and small pot and a book of matches. Then, instead of spending £2 or more on a coffee in a horrible motorway service station, you can park up next to a beautiful river somewhere, or in some picturesque woodland, and put up a deck chair and brew up your own drink, and enjoy your rest.
This is the ideal stove for taking on a bike tour, but for walking I would suggest not bothering with a stove at all, save the weight and eat cold food.
I raced this stove against my kettle at home once and the PocketRocket was triumphant.
How helpful would this review be to a person making a buying decision? Rating guidelines